(CBS News) Sal Khan is a math, science, and history teacher to millions of students, yet none have ever seen his face. Khan is the voice and brains behind Khan Academy, a free online tutoring site ...

Add Yahoo as a preferred source to see more of our stories on Google. Khan Academy - Credit: Khan Academy/PCMag Where should you go online to advance your understanding of a topic or study something ...

In 2006, Sal Khan started making YouTube videos meant to help his nieces with their math homework. Since then, Khan’s video collection has grown into a huge repository of tutorials used in and out of ...

The headquarters of what has rapidly become the largest school in the world, at 10 million students strong, is stuffed into a few large communal rooms in a decaying 1960s office building hard by the ...

All products featured here are independently selected by our editors and writers. If you buy something through links on our site, Mashable may earn an affiliate commission. Khan Academy's math lessons ...

Corrected: An earlier version of this story incorrectly stated the number of registered users of the Khan Academy. It is 137 million users. A bevy of technology and software tools are taking center ...

Khan Academy founder and CEO Sal Khan, who will serve as the Johns Hopkins University's Commencement speaker later this month, met virtually with a group of about 25 graduating seniors on Friday, May ...

Where should you go online to advance your understanding of a topic or study something new? For academic subjects, start with the excellent Khan Academy. It's one of the best online learning services, ...